-2x2/7

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Solution for -2x2/7 equation: 


x in (-oo:+oo)

-2*x < 2/7 // - 2/7

-2*x-(2/7) < 0

-2*x-2/7 < 0

-2*x-2/7 < 0 // + 2/7

-2*x < 2/7 // : -2

x > 2/7/(-2)

x > -1/7

x in (-1/7:+oo)

(-1/7:+oo)

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